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(No Model.)

0. A. MA YRHOFER. Air Compressor.

No. 236,713. Patented Jan. 18, 1881.

72-22% a! /fz zg p (/1. %4 Z} 5 w UNITED STATES PATENT @rrrcn.

CHARLES A. MAYRHOFER, OF VIENNA, AUSTRO-HUNGARY, ASSIGNOR TO LUDWIG MAUTNER, BITTER VON MARKHOF, OF SAME PLACE,

AIR-COMPRESSOR.

SPECIFICATION forming part of Letters Patent No. 236,713, dated January 18, 1881.

Application filed November 20, 1880.

To all whom it may concern.-

Be it known that I, CHARLES ALBERT MAY'RHOFER, a citizen of Austria, residing at Vienna, in the Austrian Empire, have invented new and useful Improvements in Air-Compressors, of which the following is a specification.

My invention relates to a novel construction of air-compressing apparatus, especially designed for use in the continuous and automatic working of clocks, as described in the specification forming a part of an application for Letters Patent filed on or about the 6th day of April, 1880; and it consists, essentially, in

the arrangement and combination of the compressing devices, the compressed air-receiver, the induction and eduction valves for the air and water, and other minor details, as hereinafter fully described, and shown in the accompanying drawing, in which I have represented the apparatus in vertical elevation, partly in section.

For compressing air in this apparatus I employ direct water-pressure, which is applied in the following manner:

Water under pressure enters through the feed-pipe a and port 1) into the casing A of a three-way valve or cook, and thence, through port 0, into the compressor B within the latter, and sliding freely on afloat-rod, d, is mounted a float, G, which rises with the water until it comes in contact with the stop-disk e, secured to the upper end of the float'rod 61, thereby lifting the latter. The said rod (1 passes out of the compressor through a stufling-box, f, and to its upper end, g, is pivoted one end of a lever, g, that has its fulcrum upon a standard, h, the free end of this lever being held between two stop-pins, 1 and 2, of the tumbler or segment 0, pivoted to the standard 1', and carrying the weighted lever O. The tumbler O is also provided on its other side with two stop-pins, between which the lever J is held, said lever being pivoted at 9 upon the standard i, and carries the weight P. The other end, P, of the lever J is pivoted to the valve-rod K, which draws the hollow slide valve upward when the float raises the rod d, through the medium of the stop 0, thereby placing the port 0 of the valve-chest A in communication with (No model.)

the outlet 0, so that the interior of the compressor B communicates with the dischargepipe on. The escape of water now causes the float O to fall until it comes in contact with the lower stop-plate, e, which is thereby moved downward, and carrying with it the float-rod d, places the system of levers g j is and the slide- "alve l (in the valve-chest A) in its former position to again admit water to the compressor B, as will be readily understood. The air dis- 6o placed by the flow of water into the compressorB escapes therefrom through the dischargevalve D and the pipe n to the regulating-valve E, and thence into the receiver F. The latter carriesa cylindrical casing, 0, that communi- 6 cates with its interior, and said casing contains a piston or bellows shaped regulating device which is so weighted by the adjustable weight G that the pressure of air within the receiver cannot exceed a predetermined limit.

To the pipe n is connecteda branch pipe, n, the other end of which is connected to the bottom and communicates with the interior of the piston-casing H. As soon as the pressure in the receiver F exceeds the predetermined limit 7 5 the piston within the casing 0 is lifted, thereby closing the regulating-valve E, which is connected, through the medium of a lever, 6 to the upper end of the piston-rod R, the air from the compressor B now passing through the branch pipe 0?. into the piston-casing H, raising piston J, and, through the link is, closing the admission-valve K and cutting off the supply of water to the compressor B. When the pressure in the receiver F has been reduced to the desiredlimitthrough the consumption of the air drawn therefrom, th eregulatingpiston R within the casing 0 again falls back into its normal position to open the regulatingvalve E. The pressure in branch at, being coro respondingly reduced, will cause the weighted piston J in the casing H to fall back into its normal position, thereby again opening the admission-valve K to admit water to the compressor B. When, as above described, the float 5 O has caused the valve 1 to connect the port a with the discharge-pipe m,through the medium of the tripping levers g 9' It, to discharge the water from the compressor B, the pressure of the atmosphere lifts the suction-valve D to I00 air as soon as the float G commences to rise,

as will be readily seen.

L is a water-gage, connected to the compressor B, which is also provided with the pressure-gage N, the receiver F being also provided with a like pressure gage, M, the purposes of which are obvious.

S S are drying- "essels, filled with any of the usual materials employed for drying air, and their function, in some circumstances, especially in operating clocks, is of great importance, inasmuch as the air should be applied to operate the mechanism in as dry a condition as it is possible to obtain it, for reasons which will be readily understood.

From what has been said above any one conversant with this class of apparatus will readily understand its operation, and it will be apparent that, although the devices are especially designed for use in automatically and synchronously operating clocks, the apparatus may be employed in conjunction with any other devices to regulate their operation, or for the various purposes in the arts to which such apparatus may be advantageously applied. I do, therefore, not desire to limit myself to the use of the apparatus for operating clocks only.

Having now described my invention, what I claim, and desire to secure by Letters Patcut, is

1. The combination of the compressor B, its devices for compressing the air therein, as set forth, the receiver M, connecting-pipes n, and valves E O of the pipe n, and appliances, substantially as described, to cut off the supply of water to the compressor B when the pressure in the latter equals that in the receiver, substantially as and for the purposes specified.

2. The combination, with the vessel B, its float O, float-rod d, and the trip-plates e and e, and the inlet slide-valve,constructed as set forth, of the tripping mechanism for said valve consisting of the elements gj O k, all arranged and operating substantially as described, and for the purposes specified.

3. The combination, with the compressor B, receiver I pipes at n, valve E, and weighted valve-operating devices 0 B R 6 of the piston'casing H, its piston J, induction-valve K, and connections between said valve and piston, all arranged to operate substantially as described, and for the purposes specified.

In testimony whereof I affix my signature in the presence of two witnesses.

CHARLES ALBERT MA'YRHOFER.

Witnesses HENRY PALM, Tnnonon EXTER. 

